Photonic Generation of Microwave Pulse Using a Phase-Modulator-Based Sagnac Interferometer and Wavelength-to-Time Mapping

We report a new photonic microwave pulse generator using a phase-modulator-based Sagnac interferometer (PM-SI) and wavelength-to-time mapping in a dispersive element. The key significance of the proposed scheme is that the phase of the generated microwave pulse can be continuously tuned by adjusting...

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Bibliographic Details
Published in:IEEE photonics journal 2014-12, Vol.6 (6), p.1-8
Main Authors: Li, Wei, Wang, Wei Yu, Wang, Wen Ting, Liu, Jian Guo, Zhu, Ning Hua
Format: Article
Language:English
Subjects:
Electric potential
High speed
Interferometers
Mapping
Microwave communication
Microwave filters
Microwave measurement
Microwave photonics
microwave pulses
Microwaves
Optical pulses
Photonics
Polarization
Sagnac interferometer
Sagnac interferometers
Voltage
wavelength-to-time mapping
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Summary:We report a new photonic microwave pulse generator using a phase-modulator-based Sagnac interferometer (PM-SI) and wavelength-to-time mapping in a dispersive element. The key significance of the proposed scheme is that the phase of the generated microwave pulse can be continuously tuned by adjusting the bias voltage applied to the PM. Thanks to the wide bandwidth of the PM, high-speed phase modulation of the microwave pulse can be realized. Moreover, the PM-SI is polarization independent, which means that the PM-SI is insensitive to the state of polarization of the input optical signal, ensuring a stable operation of the system. The proposed scheme is theoretically analyzed and experimentally verified.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2014.2374595